Add kernelCTF CVE-2024-26808_cos (#113)

* CVE-2024-26808_cos

* upload exploit.md

* Make readable comments for exploit.c

* Update Makefile

* Update exploit.c

* Update Makefile

* Update Makefile

* Update exploit.md

* Update exploit.md

* Improve exploit.c

* More explain on exploit.c

* More explain on exploit.c

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Co-authored-by: Bing-Jhong Billy Jheng <billy@starlabs.sg>
Co-authored-by: M Ramdhan <n0psledbyte@gmail.com>